Trailing element device for a headbox

Details Trailing element device for a headbox Trailing element device for a headbox

1989-11-09

1991-05-07

Simmons, David A.

Paper making and fiber liberation

Apparatus

Running or indefinite length product forming and/or treating...

162336, 162344, D21F 106

Patent

active

050134060

ABSTRACT:
A trailing element device is disclosed for use in a headbox of a papermaking machine. The device includes a plurality of laminated sheets, the sheets being disposed within the headbox for dampening turbulence within the headbox. A binder cooperates with the plurality of sheets for binding the sheets together such that the trailing element device defines an upstream bead which extends in a cross-machine direction within the headbox. The bead is anchored within a slot defined by the headbox such that the bead is permitted to pivot within the slot so that a downstream end of the trailing element device is permitted to freely float within the headbox for attenuating the turbulence within the headbox. A wear resistant cladding is applied to the upstream bead for inhibiting wear and fracturing of the sheets caused by frictional engagement between the trailing element device and the slot.

REFERENCES:
patent: 4566945 (1986-01-01), Ewald et al.
patent: 4617091 (1986-10-01), Rodal et al.

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